Geometry Crossword Puzzle

123456789
Across
  1. 4. Points or lines that are together in the same plane
  2. 5. The point of concurrency where all the bisectors of a triangle meet.
  3. 6. Points that are on the same line
  4. 8. The distance around a figure
Down
  1. 1. A line that cuts an object in halve
  2. 2. Equal to another side
  3. 3. The longest side of a right triangle, opposite of the 90 degree angle.
  4. 5. An educated guess based on known information
  5. 7. Point where all the angle bisectors of a triangle meet
  6. 8. A closed figure where all segments are either convex or concave
  7. 9. The point halve-way between the endpoints of the segment